Study Designs & the Evidence Hierarchy
Tutorial · Intermediate · 22 min
Not all evidence is equal. Sort study designs into a pyramid: at the top, systematic reviews / meta-analyses that pool many studies; below them, the RCT (randomize p…
Study designs2×2
By: Anacodic Team
Start Reading →2×2 Tables & Effect Measures (OR, RR, RD, NNT, HR)
Tutorial · Intermediate · 22 min
Almost every clinical comparison starts as a 2×2 table: treatment vs control, event vs no-event, cells a, b, c, d.
Study designs2×2
Includes Colab notebook
By: Anacodic Team
Start Reading →Meta-Analysis: Pooling Studies (Fixed vs Random Effects)
Tutorial · Intermediate · 20 min
A meta-analysis combines many studies into one estimate so you borrow strength from all of them instead of trusting a single trial.
Study designs2×2
Includes Colab notebook
By: Anacodic Team
Start Reading →Heterogeneity & Forest Plots
Tutorial · Intermediate · 22 min
Heterogeneity is how much the true effect really varies across the studies you pooled — disagreement beyond what sampling noise alone would produce.
Study designs2×2
Includes Colab notebook
By: Anacodic Team
Start Reading →PICO: Turning a Vague Question into an Answerable One
Tutorial · Intermediate · 13 min
Before searching or synthesizing, turn a vague mandate into a structured, answerable question — Population, Intervention, Comparison, Outcome — which also yields the search strategy and a prioritized outcome list.
Systematic reviewScoping
By: Anacodic Team
Start Reading →Study Screening & Selection: Dual Reviewers, PRISMA, and Kappa
Tutorial · Intermediate · 13 min
Narrowing a broad search to the studies you'll appraise, reproducibly: two independent reviewers, disagreements reconciled, agreement measured with Cohen's kappa, and the funnel reported as a PRISMA flow diagram.
Systematic reviewScreening
By: Anacodic Team
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